• 한국염색가공학회지
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• 제12권6호
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• pp.344-352
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• 2000

Two kinds of nylon 6 fabrics with different fiber denier, such as ultramicro fiber(UMF) nonwoven fabric(monodenier 0.05d) and regular fabric(monodenier 2.92d) are dyed with C.I. Acid Red 18(leveling type) and C.I. Acid Blue 113(milling type). Dyeing rates and adsorption isotherms are measured at $60^\circ{C}$, pH 5.0 and at liquor ratio of 1 : 250. To investigate the effect of fixing agents (Matexil FA-SNX, Monorex-RD and Tinofix-ECO) on UMF nylon 6 nonwoven fabric, dyeing is carried out at 3~10% owf with 1 : 2 metal-complex acid dyes, such as Kayalax Navy R(unsulphonated type), Lanasyn Blue S-BL(monosulphonated type) and Kayakalan Black BGL(disulphonated type). The dyeing rate of UMF nylon 6 is faster than that of regular nylon 6. From the results of absorption isotherms, the regular nylon 6 has higher saturation value of Acid Red 18 compared with UMF nylon 6, whereas UMF nylon 6 has higher saturation value of the acid Blue 113. From the absorption isotherms of both acid dyes, the regular nylon 6 has higher saturation value of Acid Red 18, whereas UMF nylon 6 has higher saturation value of the acid Blue 113. The wash fastnesses of UMF nylon 6 increases in the order of metal-complek dye containing nonsulphonated group > monosulphonated group>disulphonated group. Aftertreatment of UMF nylon 6 dyed with unsulponated and monosulphonated dyes improves wash fastness upto grade 1.5, where as that of UMF nylon 6 dyes with disulphonated dye does not improve wash fastness.

• Fibers and Polymers
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• 제7권3호
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• pp.270-275
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• 2006

The dyeability of poly(lactic acid) [PLA] with a range of commercial disperse dye was examined and compared to that of poly(ethylene terephthalate) [PET] in addition to the colour and fastness of the resultant dyeings. A screening exercise in which twenty dyes of differing energy types and chemical classes were applied to PLA revealed a substantial variation between the dyes in terms of dye uptake (12-88 % at 4 % o.w.f.). Nine dyes exhausted above 70 % and were selected for further study, which involved comparison of shade and fastness of PLA dyeings with those of the corresponding PET dyeings. Differences in shade depended on hue while wet fastness of each of the PLA dyeings was either the same or 0.5-1.0 point lower than its PET counterpart. In all but one case, dye photostability in PLA was found to be very similar to that in PET. Dye build-up profiles on PLA were also investigated and from these results mixtures of compatible dyes identified.

• 산업기술연구
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• 제20권A호
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• pp.51-56
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• 2000

The Photocatalytic decolorization and degradation of commercial dyes were studied using a batch reactor. Degussa P25 titanium dioxide and $H_2O_2$ were used as the photocatalyst and proved to be effective for dyes degradation when they were irradiated with UV light. The light source was a 20W low pressure mercury lamp. Three different kinds of dyes, such as direct dye(congo red), acid dye (acid black) and disperse dye(disperse blue) were tested. Extending the UV only treatment up to 120min, direct dye was decolorized to 60% and degraded to 30% as COD. On the other side, acid and disperse dyes were eliminated less than 10% as color and COD. But, color and COD were eliminated about 90% for all of the three dyes by $UV/H_2O_2$ system. And then the most effective decolorization was done for direct dye with 96% removal efficiency by $UV/TiO_2$ system at 120min with 500mg/L of $TiO_2$.

• 한국의류학회지
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• 제24권3호
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• pp.385-392
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• 2000

The adsorption ability of dyes on chitin, a natural polymer was investigated for decolorization of dye wastewater. Chitin was manufactured in lab by decalcification in dilute aqueous HCI solution and deproteination in dilute aqueous NaOH solution with shrimp shells. Absorbance of residue solution of dyebaths after dye adsorptions of chitin were measured in varieties of dye concentration and dipping periods. Four kinds of dyestuffs were used, C.I.Acid Blue 29. C.I.Direct Blue 6, C.I.Reactive Orange 12 and C.I.Basic Red 18. When chtin 1g was dipped in 0.05% of dyebath with stirring, maximum adsorption ratio of each kind of dyes was exhibited as 91.6% for C.I.Acid Blue 29, 95% for C.I.Direct Blue 6, 58.2% for C.I.Reactive Orange 13 and 75.8% for C.I.Basic Red 19. It shows that chitin has better adsorption abilities of ionic dyes of acid, direct and basic dye than non-ionic reactive dye. And chitin has better adsorption abilities of anionic acid direct dyes than cationic basic dye because of the presence of nitrogen atoms. All kinds of dyestuffs used showed speedy absorption effects by chitin, so chitin can absorb much amount of dyes in 5 mimutes reach to equilibrium of adsorption in 2 hours after dipping. Basic dye was absorbed the most speedily in 5 minutes, although maximum adsorption ratio is not high. That reason can be thought that chitin surface is essentially negatively charged due to polar funtional groups.

• 대한화학회지
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• 제50권4호
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• pp.321-327
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• 2006

M78과 일본산 KJ, 2개의 점토를 사용하여 계면활성제 CTMA(M-1, KJ-1), DSDMA(M-2, KJ-2) 그리고 TMSA(M-3, KJ-3)를 이용하여 변성된 점토광물을 합성하였다. 이러한 변성된 점토광물을 사용하여 염색 폐수의 주원인인 염료 중의 하나이며 대구 염색 공단 등에서 많이 사용되고 있는 염료인 acid blue 92와 acid red 1의 흡착 제거 실험을 통해 M-1, M-3, KJ-1 KJ-3의 경우 아주 좋은 흡착능력을 보인다는 결과를 얻었으며 이러한 결과는 점토 M과 KJ의 거의 0%에 가까운 흡착능력과 아주 좋은 비교가 될 수 있을 것이다. 또한 M-1과 KJ-3의 경우에는 이러한 염료 제거율이 거의 100%에 근접해 이러한 변성 점토가 실제 염색공단에서 배출되는 유해성 잔류 유기 염료 성분의 제거 방법으로 사용될 수 있는 충분한 가능성을 보였다고 할 수 있겠다.

• Fibers and Polymers
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• 제6권1호
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• pp.35-41
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• 2005

Research and development of nano fiber products is very active over the world. Physical characteristics and dyeing properties of nylon 66 nano fiber were investigated in this study. X-ray diffraction, DSC, analysis of amino end group, and water absorption were performed to get information concerning physical properties of nano fiber. Nylon 66 nano fiber was dyed with high molecular mass acid dyes. Effects of dyeing temperature, pH of dyeing solution, and concentration of acid dyes on dyeing properties such as rate of dyeing and the extent of exhaustion, were examined and compared to those of regu­lar fiber. It was found that nano fiber adsorbed acid dyes at lower temperature, got rapidly dyed, and its extents of exhaustion at specific dyeing temperature were higher than regular fiber. It was also observed that nano fiber could adsorb a large amount of acid dye without a significant loss in the extent of exhaustion. Washing fastness of the dyed nano fiber was lower by $1/2\~1$ grade, light fastness by 1 grade than the dyed regular fiber.

• 분석과학
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• 제19권1호
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• pp.50-57
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• 2006

계면활성제를 완충용액에 섞어서 사용하는 미셀 모세관 전기영동법(micellar electrokinetic capillary chromatography, MECC)을 이용하여, 아조염료의 합성성분이면서 동시에 아조염료가 분해될 때 생성되는 H-acid modifier 혹은 2-naphthylamine-1,5-disulfonic acid 등의 디아조 성분에 대한 분석을 수행하고, 이 분리 결과를 Ion-Paring 메카니즘을 이용한 고성능 액체 크로마토그래피법과 비교하였다. 이 방법을 이용하여 Direct Blue 2, Direct Blue 6, Direct Blue 15 등의 직접염료 그리고 Reactive Orange 4와 같은 반응성 염료의 혼합용액을 완전히 분리할 수 있었다. 특히 각 염료의 환원용액을 H-acid, J-acid, ${\gamma}$-acid, orthanilic acid, sulfanilic acid 2-naphthylamine-1,5-disulfonic acid 등의 표준물질과 비교 분석한 결과, 사용한 각 염료의 디아조 성분인 H-acid modifier 혹은 2-naphthylamine-1,5-disulfonic acid에 대한 정보를 얻을 수 있었다. 본 연구의 결과를 토대로 Ion-Pair 크로마토그래피법과 모세관 전기영동법은 미지의 염료에 대한 성분확인 및 디아조 혹은 커플링 성분분석에 응용할 수 있음을 알 수 있었다.

• 한국염색가공학회:학술대회논문집
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• 한국염색가공학회 2008년도 제38차 학술발표대회
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• pp.172-174
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• 2008

The study has attempted to compare the behavior of reactive, disperse and acid dyes when wastewater from these three kinds of typical dyestuffs were treated by chemical coagulation and NF membrane in pilot scale. Disperse dyeing wastewater showed the tendency of easier removal in TOC and COD and especially in color. This is probably due to low water-solubility of disperse dyes compared with reactive and acid dyes and is a positive result in terms of water reuse. Bio-kinetic constants, ${\mu}$max, $K_s$ of reactive, disperse and acid dyes were obtained, implying that their biodegradability are not significantly different.

• 한국염색가공학회지
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• 제15권1호
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• pp.23-29
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• 2003

Dyeings of the most widely used to the synthetic fibers, namely polyamide and polyester, have been carried out using acid dyes and disperse dyes. The above mentioned dye types, and indeed all dyes onto substrates, rely on the reaction properties between the substrates and dye molecules. In terms of fastness properties, however, especially to washings, the satisfactory levels are not present in the results from acid and disperse dyeings. Thus, vat dyeings leaves a feasibility and are an alternative way to overcome the problem. Although attempts and works have been reported in early years, with little if any commercial achievement and success. In this context, to meet increased demands towards a high level of wash fastness from consumers and retailers, an attempt using vat dyes has been carried out in this work.

• 한국염색가공학회지
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• 제14권3호
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• pp.34-43
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• 2002

Abstract-Many studies have been carried out to improve the dyeability of anionic dyes onto cellulosic fibers. Modification of control using cationic compounds has been most widely used. In this study, an effort was made to cationize cotton fabrics using cellulose-reactive allylamine polymer, namely triazinyl N,N'-dimethyl-N,N'-diallyl ammonium chloride in the previous work. The results showed that the dye-uptake of treated cotton fabrics with acid dyes and reactive dyes markedly increased in the various dyeing conditions. In addition, the dyeing rate of cationized cotton was also faster than that of untreated counterpart. Furthermore, the antimicrobial property was also investigated to determine the effects of cationization.